Valve for automobile-tires or the like.



F. A. GILORBST.

VALVE FOR AUTOMOBILE TIRES OR T1111 LIKE,

APPLICATION FILED SEPT. 10, 1910.

*g ggg ggg Patented-D60. 31, 1912.

2 SHEETS-SHEET 1.

E. A. GELGREST. VALVE FOR AUTOMOBILE TIRES OR THE LIKE.

EFT. 10, 1910.

APPLIOATIOI? FILED S Eatemed 1950.31, 1912. Y 2 SHEEN-SHEET 2.

=es lzriewn as valves and re he finial Within wants as well and has are a v 1011 of a simple a, setisfactei ceviceef the kin-c ieei use Wherever .toincl applicaend my inveniion consists in the trustee, arm lgenienl- L core more particularly peinted cut the vlQlZlT-S,

In the drawings wherein like reference characters indicate like or eerres ending aeis, Figure l. is a side elevation e 11 3.11 beds" and tire wit-:1 m slemce epg. 2 is -& lon tuclinal ene form of e I i 1e ea Referring DQ the i represents an automobile 0i bieyel'e wheel or the like and 2 the tire previ ecl with a tube, easing or stem 3. The stem 3 me? e secured "L0 the tire in any suit-able Way being understood. that live device" le 1: H l: l1 "1" T1 01 perils nereln 53103111 uJ-hi .QGSCI'lbELL be? 8 Helm-ally maintains the valve enemies seat. The member 8 may previclell with holes 11 W1 1 v able form of T: n so 0 control 3A 32 1 "47: mm A CA). .LOL bllvmllilgg ill U pressure of the rig at it may be provided we Wings or ezzltenslams 39, as shown in Figs. and 11. B atljusting the posiiion of the membe: 8 the pressure 01 the spring i may be veriell so "that the device h s ei'justed be operate predetermined geressure Within the tile The stem 7 is six?' '11 with e scale IL" 50 time the ressure the snrinfi 7371M}? conveniently cle'terminea by deser 1 the poslfilon of L e member 8 elative i0 the The valve 2 ember 6 is proviclecl with en opening tlieretlireugli inte the hollow stem 7 with ihe valve seat 12 arranged at the opening and an auxiliary valve 13 provided and arranged i0 normally close the opening through the Valve 6. The valve 13 may be guided on its sea-t in any suitable manner as shown it is provided we astem 1e passing 'lOOSQlj tl'ireugh guide niembe? l5 suztmoirteci by a cross 70m- 18 5e cured 1'30 elle casing 3 A spi'lng 01 resilient member 16 e06pe1'u'mg Witl the guide 15' I int 17 acljusmelv and resiliently nortle closed. fire the ingeim; air or ises "ve 13 on seat passe into "elze are, any backward pressure is closing the valve, size closing lee-- 1 ing ee weraiecl by the 16. The 11d 1 E '1 the sup lv may be seem to 1 3 er on tile helew' s+ 1 "4', as may E 77?; me tire is 11 39165. sailieump or other seuree of supply meverl. Jim pressure of fluid 01 the tire, however, abeye that dewsieecli that is, ebeve that for which the valve 8 is set will open the valveS and escape out, througliilie epeniegs 8 in the member -8. if atany time the fluid pressure Within the tire increases clue to the expansion ei ht-he eonieineci fluid er fer any other reason, fllFOVS 13 H su e, as detefinined by 1 ale-vice,

the same will J y be engaged any wievalve 6 will close. If a source of fluid supply to the tire is so connected that the openings 8 are open to the atmosphere, it will be impossible to over-inflate the tire, inasn iueh as the valve 6 will automatically open when the pressure within the tire reaches the predetermined value.

In the modified construction shown in Figs. 7 and 8, 19 represents the tube to the tire casing and 20 an additional tube secured thereto. Carried by one of the tubes, as shown by the tube 19, is a valve seat member 21. Ayalve member 22 normally controls the passage o't' fluid from the tube It), as in the other device, the valve being provided with a stem 23 guided by an adjustable member 25 and resiliently maintained in contact with its valve seat by a spring 24: or its equivalent. An auxiliary valve member 26 is a1 'anged to seat at an Opening through the valve memberEZQ fin the other the valve member "26' being construction, A, 27, :.a.;gu1de 28 and provided with a stem ,spring 29 r their equivalents, tliefspring 29 coiiperatingwith the nut 30 and "guide 28 maintaining the valve in closed positron.

. The operation of this form of valve is samilar to the form heretofore described. As the' fluid is pumped through the tube through the open end, it passes through the stem 23 and past the valve 26. the same automatically opening or checking its return. When the fluid or air in the tube 19 reaches a pre-determined pressure as'heretofore described. it automatically operates the,valve 22 and escapes out through the openings 25 in the adjustable member it is of course obvious that a Scale similar to that shown in Fig. 5 may be marked on the outside of the valve for the same purpose as that de scribed.

In Figs. 9, 10 and ll I show a slightly mod ified form applicable for use. on the common formof 'valvestem and valve used on auto- "r'mobile or bicycle tires. Referring to these figures, 31 represents the usual valve tube and 32 theva-lve arranged to coiipcratc with corresponds to the usual construction coma. suitable. valve seat 31 the valve being provided with a stem 33 and resilient membei 34; and guide 35, or their equivalents for the purpose. This part oi the device monly used. or is its equivalent. When this form of device ison the tire lprovide an auxiliary tube 34 arranged to be secured on the valve tube 31 after the tire has been influted. The tube 34 is provided \\-'il b a valve seatmen'iber having a valveseat 36 arranged to coiiperate with a valve member 37. The valve 37 is provided with a slum 38. an adjustable member 39 or its equivalent, mounted in the end of the tube 34. being provided for guiding the valve in its movement. The valve is normally resiliently maintaimal on its seat by means of a spring -10 roiiperab noeaeea ing with the valve and with the adjustable member 39, the pressure required to open the valve depending on the adjustment of the member 39. A scale 41 may also be provided in the valve stem 38 for determining the adjustment. Carried by the tube 34, as shown by the member 35 secured to the tube 345, are rods 42 or their equivalents for the purpose, provided with a suitable part 4L3 arranged to coiiperate with the valve stem and maintain the valve 32 open when the tube or casing 34 is positioned on the stem 31. After the tire has been inflated in the usual manner the part 84 is secured, or as shown is screwed upon the tube 31, thereby opening the valve 32. Upon opening the valve 82 the contained fluid will flow into the tube 31 and into a part of the tube 34, but the same is prevented from escaping by the valve member 37. Any excessi e pressure over that desired or pie-determined, either from expansion ofthe contained fluid, over-inflation or for any other-cause, will open the valve 37 and the excess fluid will escape out through the openings 39 or their equivalents. In this form the member 39 is shown with wings or extensions 39 for adjusting the same.

The device as shown is applicable for automobile or bicycle dires and may be adjusted to automatically operate at any predetermined pressure within the tire.

llaving thus described my invention it is obvious that various immaterial modifications may be made in the same without depa rting from the spirit of my invention, hence l do not wish to be understood as limiting myself to the exact construction,

arrangement or combination of parts herein shown and described or uses mentioned.

What I claim as new and desire to secure by Letters Patent is:

1. In a device of the character described, the combination of a casing having a threaded wall intermediate of its ends, a collar within the casing having threads to engage said threads of the wall, said collar providii-ig a valve seat, a cone-shaped valve adapted to engage within the opening of said collar, said valve being open, a spring for normally holding said valve to-its seat, and an auxiliary valve operative hropposition to the first mentioned valve and being cone shaped to engage within the opening of the first mentioned valve, a spring for the auxiliary valve and lateral supporting said collar, sa id valve being open, a spring for normally holdmg smd valve to lts seat, and an ELHXlllELI'X valve operative 1n opposk tion to the first mentioned valve and b8111 D cone shaped to engage Within the opening of the first mentioned valve, a spring far the auxiliary valve and means for adjusting the tension of said springs.

k cnbr WIEDQSSGS.

FRANK GILGRESL Elitnesses VJ. PHILLIP? 9. WD SMITH. 

